symptoms of a failing thunderbolt iv ignition module

One or more transistors or other electronic components that are heat sensitive are often in ignition control modules. By logging into your account, you agree to our. Accessories, Boat Lift Canopy As someone said the TB IV is a good system. Sockets, Marine Electrical WOW now you have clearly stated all of the issues, symptoms and components. Like Matt said above ^^^^ the newer ign sensor are fully potted and have a separate ground wire to hook up. When people think of their cars not starting, they often point to a dead battery as the reason behind this. I pushed the red button and it seemed solid. Pumps, Marine Pump Replacement No spark at the coil. Ski, Wakeboard Holders, Cabin Accessories & #1 Overview: I have an 89 Mercruiser 4.3l with a Thunderbolt IV Ignition. Furthermore, a faulty ignition control module can also affect the catalytic converter, which may cause further damage to your vehicle. I was asking the other day about replacements for the TB-IV because of some problems I was having, but I'm thinking that maybe I should be looking at trying to figure out what's wrong with it first. Mercruiser has 4 SB's over the years about the older style ign sensors. Thunderbolt IV Problems | Boating Forum - iboats Boating Forums Grills, Boat Drink Thunderbolt IV Need Help | River Daves Place I am here to help you with your car questions. The electronic ignition control module serves as the ignition systems solid-state On/Off switch. When they get worn out the rotor can hit the module and cause problems. When a module malfunctions, the engine typically wont run at all. Acessories, Fishing Outriggers & The Right Fit, Shop By . Depending on the nature of the issue, sometimes the vehicle can . The engine should have the coils and module assembly installed. Accessories, PWC Parts & Hardware, Boat Trailer Lights, Boat Trailer I don't have a third module to try. } Sealant, & The part that creates the spark within the cylinder uses high voltages from the ignition coil to ignite the fuel-air mixture in the spark plug. "@type": "FAQPage", So, never keep driving a car with a defective control module to avoid endangering your life or the life of the passenger. TB IV with a V6 Module. The ignition sensor is a vital component in the engine; when it goes bad, it can cause several issues. Breakers, Power Packs & Jump My guage reads 70-80 psi for oil pressure. Depending on the nature of the issue, sometimes the vehicle can be restarted and driven again after a brief period of time. The distributor or distributor gears are faulty if the rotor of the distributor cannot turn. Communication, Auto Pilot but it wasnt always that way. I remember working on cars as far back as a teenager. To view the purposes they believe they have legitimate interest for, or to object to this data processing use the vendor list link below. I am open for any more opinions,situations from people that have had the same story. Engine Misfire. Lift the distributor out of the engine compartment after removing the nuts holding it in place. Tops, Other Deals, Camping & RV This can occur without causing oil/coolant mixing. Tops, Other Fishing Lures, Fishing Rod Holders & Troubleshooting: Thunderbolt Ignition Systems | Marine Engines and He says that after the boat runs and gets up to temp 150 that the ignition module could be shorting out? Overheating Overheating is a common indicator that you could be having an ignition module problem. Rafts, Paddle "mainEntity": [{ As the main current is ON and OFF, this is where the systems electronic work starts. Deals, Boat Seats I have a 1990 Mercruiser 5.0LX with an Alpha 1 Gen 1 outdrive. Fast, free online quotes for your car repair. As the engine turns over, keep an eye on the distributor rotor. As I mentioned previously, a bad ignition control module may cause your cars engine to misfire. Install the new ignition module after removing the old one from the base plate. Because the ICM is an integral part of many ignition systems, it must be replaced as soon as it starts failing. The main reason why most of them are inside the distributor or standalone is to keep the high voltage that runs through them away from sensitive electronics found in the ECU. Do Not Sell or Share My Personal Information. engines with turbochargers, superchargers, split high velocity intake designs, variable valve timing or multi-fuel design capacity have more complex ignition timing systems to cope with the challenges these types of engines produce. Manufacturer, Boat Tables & Add to Cart. Telescopes, Covers and Tubes, Shop These tools have been tried and tested by our team, they are ideal for fixing your car at home. on most vehicles built within the last few decades, the sensors signal is sent first to the ecm. Manage Settings In this scenario, the system will attempt to make up for the underpowered spark plugscaused by the malfunctioning ignition coilby injecting more fuel. this is referred to as the vehicles base ignition timing. Motor Verso runs display advertisements and advertorials on our content. I do have a electric fuel pump in this boat that is brand new. How did you wire it to the new system? "text": "The module might be found on your car's ignition system. http://www.ebasicpower.com/faq/MERCSB92-11.htm, https://www.harborfreight.com/digital-automotive-battery-analyzer-66892.html. Hardware, Marine He the dealer bought the hull out of Florida and put the motor in later. It is when I stop and sit for a period of time. As a result of the systems utilization of sensors, reliability, mileage, and emission levels have all improved. CREATE All, Boat Bimini Symptoms of a Bad or Failing Ignition Coil. Plumbing, Fresh Water Boat If so, it is essential to know the symptoms of a bad ignition sensor on a Mercruiser. Turn on the ignition to the run position. Another common symptom of a bad or failing ignition pickup is a vehicle that does not start. After doing the above and turning the key back off I had plenty of fuel pumping into the carb. "@type": "Answer", Manufacturer, Boat Tables & Use of this site indicates your consent to the Terms of Use. Accessories, Big Jon Savers, Boat Trailer Guides & Your tapping the wire simulated the rotor turning and seeing and not seeing the openings in the rotor. Fishing Lures, Fishing Rod Holders & Not sure if I missed that part. The primary winding is the source of the current, which turns on and off thanks to the distributor. You must log in or register to reply here. Automotive Expert - I have been into cars since I was a boy. & Rings, Prop Nut Kits & Deals, Trailering Hopefully it's the coil, not much left. With the red lead of the multimeter, pierce the positive wire. 30. Software, Digital Additionally, the engine might also pause before restarting or stopping entirely. Video, GPS Chartplotters & Parts, Wash Down Locks, Boat Deck Boats, Propeller Parts & Handles, Life Jackets & Hardware, Boat Seat ignition sensor coils and ThunderBolt Sensors. See what others have asked about this, or visit the Questions page to ask your own question. } Use a Phillips screwdriver or ratchet and socket to open up the hood and take out the distributor cap, but keep the spark plug wires attached to the distributor cap. Furthermore, corroded connections, excessive heat, or loose wiring could all be indicative of problems with the ignition control module. AI Car Expert: It was 100+ out on the lake while we were down there. I'm sure my sensor is the older style, and I doubt it's ever been replaced. Accessories, Marine Electrical Marble, Engine Does it have a dead man switch that maybe has failed??? Drink Holders. Switches, Shore Power & AC I bet it is something else in the system. Hardware, Boat Trailer A fan clutch controls the car engine cooling fan and operates on temperature. Bullet Skimmer, Paint and As such, getting your car looked at as soon as possible is essential to solving the issue. The ECM receives the sensor signal first on the majority of recent automobiles. Plumbing, Anchor Lights, Boat Trailer The chart says bad ignition switch but I replaced it. Protection, Dock Storage & Accessories, PWC Parts & However, these potential problems must be ruled out because a faulty mass air flow sensor or a filthy engine filter can also contribute to poor fuel economy. Unusually high temperatures on the module body may also indicate problems with the ignition control module. Turn the engine on and inspect the old spark plug for a spark. The primary winding (outer winding) and secondary winding are the two sets of windings that make up the ignition coil (inner winding). In order to generate the voltage required by the spark plugs to ignite the mixture of air and fuel inside the engine cylinder, the ignition control module regulates the firing of the ignition coil or coils. Following the matchmark, attach the distributor to the engine and then install the distribution cover. As such, this can be indicative of a failing ignition control module. Use a screwdriver or even a ratchet and socket to remove the mounting bolts from the module and unplug the electrical connector. An ignition issue is indicated by no spark on the plug. I am having a similar issue and in the process of eliminating issues. I have always thought that the more people that express their opinion the smarter the results. I really enjoy sharing the tips and experiences I have learned myself with our writers. Thunderbolt IV Problem - Offshoreonly.com For a better experience, please enable JavaScript in your browser before proceeding. Your check engine light will illuminate once it detects something wrong with your ignition system. Fasteners, Boat Windshield Storage a professional can do this using tools such as a spark tester, test light and a dedicated ignition module tester. Sealant, & Ask me anything. I think i paid around $400 for everything. Feb 19, 2013. However, this problem will persist and worsen until it is taken care of. Copyright 2019 IBOATS. The system uses voltage signals from the armature to turn on and off the primary coil. Bad Ignition Control Module Symptoms To Watch For Using a ratchet and socket, remove the mounting bolts for the assembly. Typically, the ignition control module failure stops the engine from starting because the main ground circuit is not properly terminated.. Furniture, Boat Seat Pedestals & bucks. JavaScript is disabled. Installed the updated design and it fited right up. If your pickup in the distributor is the old style non enclosed style without the dedicated ground wire I would update that as well as it will eventually leave you paddling. JavaScript is disabled. 3 coils in 2 days. Pumps, Livewell Aerator Pumps Replaces sensor, cap rotor and wires. Archive - Holders, Cabin Accessories & Similarly, dark exhaust fumes may also be a symptom of problems with your cars ignition control module. For a better experience, please enable JavaScript in your browser before proceeding. lead to the white/red wire terminal at the dist. I want to be safe !! Then would start again and run all day. Dock, Cabin and Bilge Pump, Tires, Rims, & Hub Electronic ignition pickups are a component found on traditional electronic distributor ignition systems. Those go bad, especially the old style ones with the external connections. I also put a spacer between the carb and intake manifold thinking it was a vapor loc issue due to heat. & Circuit Fenders, Boat Trailer The ignition module is external and bolted to a heat plate on the exh manifold. Welcome to Motor Verso. I'm new to this site, my father-in-law turned me onto it as I have what I now believe to be a ignition module issue. Engine stalling Another symptom of a problematic ESC module is the engine stalling. Save my name, email, and website in this browser for the next time I comment. The engine may suddenly just shut off, almost as if the key had been turned off. Storage TESTING THUNDERBOLT IV HEI IGNITION SYSTEM. How much it will cost will also depend on how many cylinders have misfired. Vinyl, Floating Boat Like I said in the first post. Locks, Boat Deck Boat Gel Coat - Spectrum Color, Pumps and You dont need to disconnect the spark plug wires in order to remove the distributor cover. Kit includes coil wire. Cable, Marine Batteries & Boat, Sell A Cheap and easy to replace. I did three pumps and had fuel each time. The engines metal surface should have the spark plug in it. (9 Reasons Why). He says that after the boat runs and gets up to temp 150 that the ignition module could be shorting out? Maintenance, Fiberglass & Epoxy Shop If this happens, the engine might falter, or your car may even decelerate; the engine misfire may occur when the ignition wires that hold the spark plug in place have become fried from wear and tear. The only parts place in town was an auto part store who sold me a coil with no internal resistor. Please see our, Ford E-350 Super Duty V8-5.4L - Vehicle Engine Electrical - Placentia, California, Dodge Charger V6-3.5L - Vehicle Engine Electrical Inspection - Nashville, Tennessee. Bilge Pump, Tires, Rims, & Hub Modern automobiles use push-button ignitions that eliminate the need for a distributor key. $2700. Parts, Rule 1500 GPH Automatic As soon as you notice any of the aforementioned signs, take your car in for an inspection to keep it in peak condition. Harware, Marine Nuts, Bolts, & (also attached to the - side of the coil). Since the engine compartment is where many car models place their modules, it is common for these parts to eventually fail. You will find the ECM in the vehicles electronic control unit box or separately outside the distributor. Why not take an inductive pickup timing light with you, do the 30 minute thing, and then start it up after hooking up the light. Accessories, Big Jon Deals, Dealer Battery Charger, Marine Audio & If the ignition module fails or has any problems it can lead to performance issues with the vehicle, such as misfires, hesitation, loss of power, and even reduced fuel economy. When the ignition is turned on, check for voltage at the coil positive terminal. Acessories, Fish Cleaning Rollers, Boat Trailer Hitches, & yup coil is good.per the test procedure I have 12v at red/white wire and tested for activating spark by grounding green/white wire. When this happens, the converter may also be damaged by the excess fuel over time. I seen that there is a 40 amp circut mounted on the top left side of the motor. Apparently I`m not the only one who has had issues with this little gremlin box. Charts & A used spark plug should be inserted into the end of the plug boot after removing one plug wire from the spark plug. You should measure the battery voltage at the wire. Maintenance, Boat Cleaners & your boats Gel Coat Match, Shop Deals, Paint & Maintenance Below are the parts of an electronic ignition system and their operations: The battery serves as the ignition systems power source by supplying the necessary energy when the ignition switch is on. NGK BPR6FS Spark Plug. A sensor inside the distributor sends a signal to the module. Acessories, Fishing Outriggers & There are several symptoms to note if you suspect a faulty ignition control module, including issues when starting or accelerating your car. Deals, Electronics More Buying Choices. The boat mechanic told me it is probably the ignition module acting up. I have some more history for you. I had issues after running the boat for a hour and then sitting for a short period of time. Ropes, Boat Starters, Marine Solar Power Towers, Tow Ropes & For instance, if the thermostat, ignition control module, etc. It has a plug that plugs into it and it has worked with this plug for all these years. MarineEngine.com does not offer troubleshooting assistance or repair advice by email or by telephone.You are invited to join our public Boat Repair Forum to seek assistance from other members.You may also visit the Boat Motor Manuals section of our site to obtain a service manual. Learn more about our writers on our about us page. Parts, Inflatable (11 Reasons Why), Dirty Air Filter Symptoms (9 Things To Be Aware Of), Why Does My Car Sound Like A Motorcycle? Zincs, Generator Fits GM V-8 engines with Thunderbolt IV & V HEI ignitions. The ignition coil is fired using the signal to supply the spark plugs with energy. (grey wire on the negative terminal of the coil) A faulty tach can short out the ign coil. Guide, Boat As the ignition pickup essentially functions as the activation switch for the entire ignition system, when it fails, it can greatly affect the operation of the vehicle. Labor costs typically fall between $70.00 and $90.00. The component, a pulse-type transformer, creates the high-voltage brief fire or spark needed for combustion. Accessories, Marine DC Power Plugs on some vehicles, the ecm may control ignition timing above a certain engine rpm, while the ignition module has control below a certain rpm. When I start the boat up she runs fine then after 30 seconds she dies. Dizzy,cap,coil ,wires, and ballist resister. Battery Charger, Marine Audio & "@type": "Answer", You can access the problem code by inserting an OBD scan tool into the OBD port on your vehicle. #1 1984 5.7L mercruiser, ran fine in the drive way before going to the lake. If you discover that your vehicle is getting less mileage than usual from a full tank, you may have a faulty ignition control module. each spark plug must fire at exactly the right time for the engine to run properly. I kept the engine room at about 80 degrees through mid March, and kept the engine all covered up. Anchor Box Anchors, Fishing Rod & Reel Professionals. The ignition modules principal function is normally to open or close a ground circuit to the ignition coils primary winding. Kits, Boat Trailer I am more than willing to replace this module, I did however follow the procedures mentioned in the post by Don S and confirmed spark at coil. TESTING THUNDERBOLT IV HEI IGNITION SYSTEM - Frequently Asked Questions My plan is to bypass the gremlin box. I am more than willing to replace this module, I did however follow the procedures mentioned in the post by Don S. Then you need to replace the sensor inside the distributor, not the module. & Dock, Anchor Chains & Forums, Find Code For Radio Honda Accord 2008: How To Find, Retrieve, Enter, How To Change Headlight Bulb: Steps To Replace A Headlight Bulb, How To Replace Alternator: Steps To Change Your Cars Alternator, Your email address will not be published. Keep the trigger queezed until the engine dies. Shop Engines with secondgeneration Thunderbolt IV ICMs that have a damaged harness will also require the new ICM and harness kit. I thought from the beginning it was that or a fuel delivery issue. ACCOUNT, Find All rights reserved. Aside from my points above, rough idling may be another symptom of a failing ignition control module. Drink Holders, http://www.4shared.com/office/Q0-h7UTz/Delco_Voyager_Kit.html. If it does, find the oil pressure switch that is installed and is causing all the problems. Marble, Engine It is never a good idea to keep fixing this car; instead, you should sell it once you discover that the necessary repairs are approaching 75% of the worth of your car. Boats, Propeller Parts & . For a better experience, please enable JavaScript in your browser before proceeding. Put the multimeters red lead on the positive coil terminal. one or the other is breaking down. Its a small block Chevy. What more could you ask for You must log in or register to reply here.
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